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问题 单项选择题

影子价格是对于市场交换价格的一种计算价格，它反映了（）。

A．货物的预测价值

B．资源最低的配置要求

C．货物的真实价值与资源最优配置的要求

D．货物的不可见价值

答案

参考答案：C

单项选择题

WLANs are increasingly popular because they enable cost-effective connections among people, applications and data that were not possible, or not cost-effective, in the past. For example, WLAN-based applications can enable fine-grained management of supply and distribution (166) to improve their efficienty and reduce (167) . WLANs can also enable entirely new business processes. To cite but one example, hospitals are using WLAN-enabled point-of-care applications to reduce errors and improve overall (168) care. WLAN management solutions provide a variety of other benefits that can be substantial but difficult to measure. For example, they can protect corporate data by preventing (169) through rogue access points. They help control salary costs, by allowing IT staffs to manage larger networks without adding staff. And they can improve overall network mananement by integrating with customers’ existing systems, such as OpenView and UniCenter. Fortunately, it isn’t necessary to measure these benefits to justify investing in WLAN management solutions, which can quickly pay for themselves simply by minimizing time-consuming (170) and administrative chores.

（167）是（）

A.personel

B.expenses

C.overhead

D.hardware
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单项选择题

男，34岁，上厕所时向后摔倒，枕部着地，昏迷40分钟。醒后对伤情记忆不清，呕吐3次。急诊检查：神志清，嗜睡，枕部皮肤裂伤，出血已停止。余神经系统查体阴性。头部CT见双额极少许混杂密度影。X线片示枕骨纵向线状骨折。目前诊断为（）

A.轻型闭合性颅脑损伤、脑震荡、枕骨骨折

B.中型开放性颅脑损伤、双额叶脑挫裂伤、枕骨骨折

C.重型闭合性颅脑损伤、双额叶挫伤、枕骨骨折

D.中型闭合性颅脑损伤、双额叶脑挫裂伤、枕骨骨折

E.轻型闭合性颅脑损伤、脑挫裂伤、枕骨骨折
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